Marigold is a common name for two different genera of flowering plants: CALENDULA and Tagetes. CALENDULA, also known as pot marigold, is a genus of annual or perennial herbaceous plants in the daisy family Asteraceae. Tagetes is a genus of annual or perennial, mostly herbaceous plants in the sunflower family Asteraceae. Both genera are native to the Americas, but are now found in many other parts of the world. Marigolds are popular garden plants, grown for their bright yellow, orange, or red flowers.